CN107413535A - Disk centrifuge and its piston - Google Patents
Disk centrifuge and its piston Download PDFInfo
- Publication number
- CN107413535A CN107413535A CN201710785441.0A CN201710785441A CN107413535A CN 107413535 A CN107413535 A CN 107413535A CN 201710785441 A CN201710785441 A CN 201710785441A CN 107413535 A CN107413535 A CN 107413535A
- Authority
- CN
- China
- Prior art keywords
- piston
- frustum cone
- angle
- cone side
- disk centrifuge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 112
- 238000010438 heat treatment Methods 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 abstract description 13
- 230000003628 erosive effect Effects 0.000 description 47
- 230000008859 change Effects 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 239000003082 abrasive agent Substances 0.000 description 3
- 239000006061 abrasive grain Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- -1 shape Shape Substances 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a kind of disk centrifuge piston, it is made up of plastic deformation material, including the interior piston main body for setting conical surface inner chamber, the conical surface inner chamber of piston main body is mainly made up of two inverted frustum cone sides, including the first frustum cone side and the second frustum cone side, the upper bottom surface of first frustum cone side is adapted with the second frustum cone side bottom surface, relation between the bus of first frustum cone side and its upper bottom surface between volume angle β and the bus and its upper bottom surface of second frustum cone side between volume angle α is α ＜ β and 45 ° of 65 ° of ＜ α ＜, the surface of second round platform is coated with brittleness material.Using the seperator deslagging of the piston it is smooth, eliminate accumulated slag phenomenon, extend service life of equipment.
Description
Technical field：
The present invention relates to a kind of centrifugal device using physical separation technical process, more particularly to a kind of piston of disk centrifuge
With the disk centrifuge using the piston.
Background technology：
For disk centrifuge in separation process, piston inner conical surface is particularly one section of difference with separation of material by sewage draining exit, meeting
There is different degrees of rotten damage, accumulated slag phenomenon is serious, causes to vibrate, and equipment can not normal operation.Piston inner conical surface is in isolate
It is due to have small and loose fluidized particle constantly to be impacted to material surface during material, so as to cause the surface shape of material
Into erosive wear and fatigue wear.To improve the erosion resistance of piston interior surface, fatigue wear performance, increase the cone of piston face
Angle.Surface rolling processing improves hardness and surface smoothness, the abrasion of piston obtain certain suppression, but due to the excessive row of cone angle
The not smooth accumulated slag phenomenon of slag is serious, the increase of rotary drum body amount of unbalance, vibration equipment, it is impossible to normal work.
The information for being disclosed in the background section is merely intended to understanding of the increase to the general background of the present invention, without
It should be considered as recognizing or imply that the information structure has been the existing skill well known to persons skilled in the art in any form
Art.
The content of the invention：
It is an object of the invention to provide a kind of deslagging is smooth, the dish-style point that eliminates accumulated slag phenomenon, extend service life of equipment
The piston disembarked, so as to overcome it is above-mentioned in the prior art the defects of.
To achieve the above object, the invention provides a kind of disk centrifuge piston, it is made up of plastic deformation material, including
The piston main body of conical surface inner chamber is inside set, the conical surface inner chamber of the piston main body is mainly made up of two inverted frustum cone sides, bag
The first frustum cone side and the second frustum cone side are included, the upper bottom surface of first frustum cone side is mutually fitted with the second frustum cone side bottom surface
Match somebody with somebody, between the bus and its upper bottom surface of first frustum cone side bus of volume angle β and second frustum cone side with thereon
Relation between bottom surface between volume angle α is α ＜ β and 45 ° of 65 ° of ＜ α ＜, and the surfacing attribute of second round platform is fragility
Material（Fragile material, under external force（Such as stretch, impact）The deformation for only producing very little destroys the material of fracture.）.
The material properties of inner conical surface is changed, fragile material is changed into from original plastic material, accumulated slag phenomenon can be eliminated, together
Shi Tai great reduces the abrasion on surface and expands the application market of centrifuge.
Preferably, in above-mentioned technical proposal, piston is made of 20Cr13 or 0Cr13Ni4Mo, and elongation percentage A after heat treatment >=
15%, the material of elongation percentage A >=5% is referred to as plastic material.
Preferably, in above-mentioned technical proposal, the plating hard chromium on surface of the second round platform is simultaneously mirror-finished.
An explanation and explanation are done to design principle below：
First, the main reason for piston inner conical surface sheet erosion wears is analyzed：
1. learnt according to test data：There is maximum in plastic material erosion rate in 20 °~30 ° of generator rotor angles, and the angle of shock increases afterwards
Add, erosion rate reduces.And fragile material maximum erosion rate is at the generator rotor angle close to 90 °.
2. the conventional material of piston is 20Cr13 or 0Cr13Ni4Mo, elongation percentage A >=15% after heat treatment, the material of rate A >=5%
Material is referred to as plastic material.
3. according to the wear mechanism of plastic material, during low angle erosion based on micro-cutting ditch dug with a plow, high angle erosion is to modeling
Property material originally show as chisel hole and plasticity extrusion, repeat impact repeated deformation and fatigue cause fracture and peeled off, tired with low week
Erosion wear theory based on labor points out that certain material will produce certain deformation under the impact of abrasive particle, depending on material, mill
Grain, the difference of the angle of attack, the deformation volume and deflection of material are different.
The deformability of material determines the wear extent of material, and its expression formula is：
,
In formula：,Wear volume；Deform volume；Material averagely should in necessarily deformation volume
Become；Material critical deformation failure strains；
Every kind of material has critical strain failure strain amount, when the material deformation strain amount that is hit reaches the value, material will
Split away off in the form of grinding, its critical strain failure strain amount of plastic material is very big, and the deflection in one-shot is past
It is past not reach the value, thus need to strain gradually accumulation after repeat impact and destroy material.As can be seen here, piston
Material properties be plastic material, in the factors for influenceing erosive wear, only by changing piston angle and material
Characteristic two kinds of channels reduce the erosive wear of interior poppet surface.Because rotating speed and the characteristic of separation of material that equipment has, use
Environment is by other influence factors such as erosion speed, erosion time, environment temperature, the property of abrasive material（Hardness of the abrasive grain, shape,
Grain brokenness）It is cured to change substantially into fixed number.
According to the theory of above-mentioned erosive wear, each side factor is considered, poppet surface in piston is changed to by single conical surface
Double-conical-surface,Angle is angle of attack, is passed throughThe optimization design of angle improves durability.By practical experience for many years and
Theory weighs inner conical surface45 °~65 ° of the range of choice of angle.Learnt according to test dataAngle is smaller, and deslagging is more smooth,
It is not easy accumulated slag, and the material property of piston is understoodThe smaller erosive wear of angle is more serious.In order to solve lance therebetween
Shield, it is necessary to set aboutThe erosive wear of poppet surface in being reduced on the premise of angle reduction.
A kind of disk centrifuge, using the disk centrifuge piston as described in preceding any technical scheme.
Compared with prior art, the present invention has the advantages that：
1. the structure design of Double-conical-surface is made deslagging smooth, is eliminated accumulated slag phenomenon, extend and set by the orientation optimization to inner conical surface
Standby service life.
2.The conical surface makes the attribute of its material be changed into fragile material by plastic material by surface treatment, reduces abrasion, greatly
The durability of the part is improved greatly.
3. setting foot in new field, the use range of seperator is expanded.
4.The design of the conical surface reduces manufacturing cost, only need pairThe conical surface implements surface treatment, does not do and locates for the β conical surfaces
Reason.
5.The surface treatment of the conical surface（Hard chrome plating）Reach minute surface（The raising of finish）Show the abrasion accumulated slag of piston face
The reduction of elephant has qualitative leap.
Brief description of the drawings：
Accompanying drawing one：The curved line relation of the angle of shock and erosion rate；
Accompanying drawing two：Piston deslagging schematic diagram；
Accompanying drawing three：Single conical surface piston schematic diagram；
Accompanying drawing four：Double-conical-surface piston schematic diagram；
Embodiment：
Below to the present invention embodiment be described in detail, it is to be understood that protection scope of the present invention not by
The limitation of embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " comprising " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other members
Part or other parts.
Embodiment 1
First, the main reason for piston inner conical surface sheet erosion wears is analyzed：
1. according to the angle of shock and the curved line relation of erosion rate（Annex map one）Plastic material erosion rate in 20 °~30 ° of angle of shocks
There is maximum, afterwards angle of shock increase, erosion rate reduces.And fragile material maximum erosion rate appears in the generator rotor angle close to 90 °
Place.
2. the conventional material of piston is 20Cr13 or 0Cr13Ni4Mo, elongation percentage A >=15% after heat treatment, the material of rate A >=5%
Material is referred to as plastic material.
3. according to the wear mechanism of plastic material, during low angle erosion based on micro-cutting ditch dug with a plow, high angle erosion is to modeling
Property material originally show as chisel hole and plasticity extrusion, repeat impact repeated deformation and fatigue cause fracture and peeled off, tired with low week
Erosion wear theory based on labor points out that certain material will produce certain deformation under the impact of abrasive particle, depending on material, mill
Grain, the difference of the angle of attack, the deformation volume and deflection of material are different.The deformability of material determines the wear extent of material,
Its expression formula is：,
In formula：,Wear volume,Deform volume,Material averagely should in necessarily deformation volume
Become,Material critical deformation failure strains.
Every kind of material has critical strain failure strain amount, when the material deformation strain amount that is hit reaches the value, material
It will be split away off in the form of grinding, its critical strain failure strain amount of plastic material is very big, the deformation in one-shot
Amount does not often reach the value, thus needs to strain gradually accumulation after repeat impact and destroy material.As can be seen here,
The material properties of piston are plastic material, in the factors for influenceing erosive wear, only by changing piston angle and material
Two kinds of channels of characteristic of material reduce the erosive wear of interior poppet surface.Because rotating speed and the characteristic of separation of material that equipment has,
Use environment is by other influence factors such as erosion speed, erosion time, environment temperature, the property of abrasive material（Hardness of the abrasive grain, shape
Shape, Particle Breakage）It is cured to change substantially into fixed number.
According to the theory of above-mentioned erosive wear, each side factor is considered, poppet surface in piston is changed to by single conical surface
Double-conical-surface（See accompanying drawing three, four）, in figureAngle is angle of attack, is passed throughThe optimization design of angle improves durability.Pass through
Practical experience for many years and theoretical deliberation inner conical surface45 °~65 ° of the range of choice of angle.According to piston deslagging schematic diagram（See
Accompanying drawing two）Angle is smaller, and deslagging is more smooth, it is not easy to accumulated slag, and the material property of piston is understoodThe smaller erosive wear of angle
It is more serious.In order to solve contradiction therebetween, it is necessary to set aboutThe erosion of poppet surface in being reduced on the premise of angle reduction
Abrasion.
2nd, solution：The material properties of inner conical surface is changed, fragility material is changed into from original plastic material
Material, the erosive wear by one visible fragile material of accompanying drawing be withThe increase of angle and increase, make therebetween contradiction solved
Certainly.Therefore,The inner cone surface treatment of angle（Hard chrome plating）Its surfacing attribute is changed into fragile material, not only eliminate accumulated slag
Phenomenon, while reduce very much the abrasion on surface greatly and expand the application market of centrifuge.
A kind of disk centrifuge piston, is made up of plastic deformation material, including the interior piston main body for setting conical surface inner chamber, described
The conical surface inner chamber of piston main body is mainly made up of two inverted frustum cone sides, including the first frustum cone side and the second round platform side
Face, the upper bottom surface of first frustum cone side are adapted with the second frustum cone side bottom surface, the bus of first frustum cone side
Relation between its upper bottom surface between volume angle β and the bus and its upper bottom surface of second frustum cone side between volume angle α
For α ＜ β and 45 ° of 65 ° of ＜ α ＜, the surfacing attribute of second round platform is fragile material（Fragile material, used in outer masterpiece
Under（Such as stretch, impact）The deformation for only producing very little destroys the material of fracture.）.Become the material properties of inner conical surface
Change, fragile material is changed into from original plastic material, accumulated slag phenomenon can be eliminated, while reduce the abrasion on surface greatly simultaneously very much
Expand the application market of centrifuge.
Preferably, in above-mentioned technical proposal, piston is made of 20Cr13 or 0Cr13Ni4Mo, and elongation percentage A after heat treatment >=
15%, the material of elongation percentage A >=5% is referred to as plastic material.
Preferably, in above-mentioned technical proposal, the plating hard chromium on surface of the second round platform is simultaneously mirror-finished.
An explanation and explanation are done to design principle below：
First, the main reason for piston inner conical surface sheet erosion wears is analyzed：
1. learnt according to test data：There is maximum in plastic material erosion rate in 20 °~30 ° of generator rotor angles, and the angle of shock increases afterwards
Add, erosion rate reduces.And fragile material maximum erosion rate is at the generator rotor angle close to 90 °.
2. the conventional material of piston is 20Cr13 or 0Cr13Ni4Mo, elongation percentage A >=15% after heat treatment, the material of rate A >=5%
Material is referred to as plastic material.
3. according to the wear mechanism of plastic material, during low angle erosion based on micro-cutting ditch dug with a plow, high angle erosion is to modeling
Property material originally show as chisel hole and plasticity extrusion, repeat impact repeated deformation and fatigue cause fracture and peeled off, tired with low week
Erosion wear theory based on labor points out that certain material will produce certain deformation under the impact of abrasive particle, depending on material, mill
Grain, the difference of the angle of attack, the deformation volume and deflection of material are different.
The deformability of material determines the wear extent of material, and its expression formula is：
,
In formula：；Wear volume；- deformation volume；- material is flat in necessarily deformation volume
Strain；- material critical deformation failure strains.
Every kind of material has critical strain failure strain amount, when the material deformation strain amount that is hit reaches the value, material
It will be split away off in the form of grinding, its critical strain failure strain amount of plastic material is very big, the deformation in one-shot
Amount does not often reach the value, thus needs to strain gradually accumulation after repeat impact and destroy material.As can be seen here,
The material properties of piston are plastic material, in the factors for influenceing erosive wear, only by changing piston angle and material
Two kinds of channels of characteristic of material reduce the erosive wear of interior poppet surface.Because rotating speed and the characteristic of separation of material that equipment has,
Use environment is by other influence factors such as erosion speed, erosion time, environment temperature, the property of abrasive material（Hardness of the abrasive grain, shape
Shape, Particle Breakage）It is cured to change substantially into fixed number.
According to the theory of above-mentioned erosive wear, each side factor is considered, poppet surface in piston is changed to by single conical surface
Double-conical-surface,Angle is angle of attack, is passed throughThe optimization design of angle improves durability.By practical experience for many years and
Theory weighs inner conical surface45 °~65 ° of the range of choice of angle.Learnt according to test dataAngle is smaller, and deslagging is more smooth,
It is not easy accumulated slag, and the material property of piston is understoodThe smaller erosive wear of angle is more serious.In order to solve lance therebetween
Shield, it is necessary to set aboutThe erosive wear of poppet surface in being reduced on the premise of angle reduction.
A kind of disk centrifuge, using the disk centrifuge piston as described in preceding any technical scheme.
The description of the foregoing specific illustrative embodiment to the present invention is to illustrate and the purpose of illustration.These are retouched
State and be not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can carry out a lot
Change and change.The purpose of selecting and describing the exemplary embodiment is that explain the certain principles and in fact of the present invention
Border is applied, so that those skilled in the art can realize and utilize a variety of exemplary embodiment party of the present invention
Case and various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (4)
1. a kind of disk centrifuge piston, is made up of plastic deformation material, including the interior piston main body for setting conical surface inner chamber, its feature
It is：The conical surface inner chamber of the piston main body is mainly made up of two inverted frustum cone sides, including the first frustum cone side and
Two frustum cone sides, the upper bottom surface of first frustum cone side are adapted with the second frustum cone side bottom surface, the first round platform side
Between the bus in face and its upper bottom surface between volume angle β and the bus and its upper bottom surface of second frustum cone side volume angle α it
Between relation be coated with brittleness material for α ＜ β and 45 ° of 65 ° of ＜ α ＜, the surface of second round platform.
2. disk centrifuge piston according to claim 1, it is characterised in that：The piston with 20Cr13 or
0Cr13Ni4Mo is made, elongation percentage A >=15% after heat treatment.
3. disk centrifuge piston according to claim 1, it is characterised in that：The plating hard chromium on surface of second round platform and progress
Mirror finish.
A kind of 4. disk centrifuge, it is characterised in that：Using the disk centrifuge as described in claim 1-3 any claims
Piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710785441.0A CN107413535B (en) | 2017-09-04 | 2017-09-04 | Disc separator and piston thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710785441.0A CN107413535B (en) | 2017-09-04 | 2017-09-04 | Disc separator and piston thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107413535A true CN107413535A (en) | 2017-12-01 |
| CN107413535B CN107413535B (en) | 2024-02-02 |
Family
ID=60435680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710785441.0A Active CN107413535B (en) | 2017-09-04 | 2017-09-04 | Disc separator and piston thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107413535B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477417A (en) * | 2021-07-14 | 2021-10-08 | 南京中船绿洲机器有限公司 | Disk type separator antifriction method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2496553Y (en) * | 2001-06-22 | 2002-06-26 | 营口庆营石化设备厂 | Butterfly type cyclone separator |
| WO2003016757A1 (en) * | 2001-08-17 | 2003-02-27 | Mahle Metal Leve S.A. | Piston for an internal combustion engine |
| CN201040266Y (en) * | 2007-05-16 | 2008-03-26 | 南京中船绿洲机器有限公司 | Sealing device for drum body and piston of disc separator |
| CN201399388Y (en) * | 2009-03-09 | 2010-02-10 | 浙江轻机实业有限公司 | Water pre-injection cavity operation structure of piston deslagging disc type separator |
| CN102886313A (en) * | 2012-07-22 | 2013-01-23 | 江苏巨能机械有限公司 | Disc type separator |
| CN105413892A (en) * | 2015-12-15 | 2016-03-23 | 宜兴市华鼎粮食机械有限公司 | Disc-type centrifuge rotary drum with wear-resistant lining |
| CN105413894A (en) * | 2015-12-15 | 2016-03-23 | 宜兴市华鼎粮食机械有限公司 | Disc-type centrifuge rotary drum provided with novel distributor |
| CN207308105U (en) * | 2017-09-04 | 2018-05-04 | 南京中船绿洲机器有限公司 | Disk centrifuge and its piston |
-
2017
- 2017-09-04 CN CN201710785441.0A patent/CN107413535B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2496553Y (en) * | 2001-06-22 | 2002-06-26 | 营口庆营石化设备厂 | Butterfly type cyclone separator |
| WO2003016757A1 (en) * | 2001-08-17 | 2003-02-27 | Mahle Metal Leve S.A. | Piston for an internal combustion engine |
| CN201040266Y (en) * | 2007-05-16 | 2008-03-26 | 南京中船绿洲机器有限公司 | Sealing device for drum body and piston of disc separator |
| CN201399388Y (en) * | 2009-03-09 | 2010-02-10 | 浙江轻机实业有限公司 | Water pre-injection cavity operation structure of piston deslagging disc type separator |
| CN102886313A (en) * | 2012-07-22 | 2013-01-23 | 江苏巨能机械有限公司 | Disc type separator |
| CN105413892A (en) * | 2015-12-15 | 2016-03-23 | 宜兴市华鼎粮食机械有限公司 | Disc-type centrifuge rotary drum with wear-resistant lining |
| CN105413894A (en) * | 2015-12-15 | 2016-03-23 | 宜兴市华鼎粮食机械有限公司 | Disc-type centrifuge rotary drum provided with novel distributor |
| CN207308105U (en) * | 2017-09-04 | 2018-05-04 | 南京中船绿洲机器有限公司 | Disk centrifuge and its piston |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477417A (en) * | 2021-07-14 | 2021-10-08 | 南京中船绿洲机器有限公司 | Disk type separator antifriction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107413535B (en) | 2024-02-02 |
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